指定下一个绘图方法程序的水平坐标。
Specifies the horizontal coordinate for the next drawing method.指定下一个绘图方法程序的垂直坐标。
The ellipse and the rectangle also change gradually from red to blue as the horizontal coordinate goes from 0 to 200.当水平座标从0移到200时,椭圆形和矩形也会从红色逐渐变成蓝色。